test bank for lehninger principles of biochemistry 7th edition nelson.

,1. Invavbacterialvcell,vthevDNAvisvinvthe:
A) cellvenvelope.
B) cellvmembrane.
C) nucleoid.
D) nucleus.
E) ribosomes.


2. Avmajorvchangevoccurringvinvthevevolutionvofveukaryotesvfromvprokaryotesvwasvthe
developmentvof:
A) DNA.
B) photosyntheticvcapability.
C) plasmavmembranes.
D) ribosomes.
E) thevnucleus.


3. Inveukaryotes,vthevnucleusvisvenclosedvbyvavdoublevmembranevcalledvthe:
A) cellvmembrane.
B) nuclearvenvelope.
C) nucleolus.
D) nucleoplasm.
E) nucleosome.


4. Thevdimensionsvofvlivingvcellsvarevlimited,vonvthevlowervendvbyvthevminimumvnumbervofvb
iomoleculesvnecessaryvforvfunction,vandvonvthevuppervendvbyvthevratevofvdiffusionvofvsolut
esvsuchvasvoxygen.vExceptvforvhighlyvelongatedvcells,vtheyvusuallyvhavevlengthsvandvdiame
tersvinvthevrangevof:
A) 0.1vmvtov10vm.
B) 0.3vmvtov30vm.
C) 0.3vmvtov100vm.
D) 1vmvtov100vm.
E) 1vmvtov300vm.


5. Whichvgroupvofvsingle-celledvmicroorganismsvhasvmanyvmembersvfoundvgrowingvin
extremevenvironments?
A) bacteria
B) archaea
C) eukaryotes
D) heterotrophs
E) Nonevofvthevanswersvisvcorrect.




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, 6. ThevbacteriumvE.vcolivrequiresvsimplevorganicvmoleculesvforvgrowthvandvenergyóitvis
thereforeva:
A) chemoautotroph.
B) chemoheterotroph.
C) lithotroph.
D) photoautotroph.
E) photoheterotroph.


7. Whichvisvavlistvofvorganelles?
A) mitochondria,vchromatin,vendoplasmicvreticulum
B) peroxisomes,vlysosomes,vplasmavmembrane
C) proteasomes,vperoxisomes,vlysosomes
D) mitochondria,vendoplasmicvreticulum,vperoxisomes
E) Allvofvthevanswersvarevcorrect.


8. WhichvlistvhasvthevcellularvcomponentsvarrangedvinvordervofvINCREASINGvsize?
A) aminovacidv<vproteinv<vmitochondrionv<vribosome
B) aminovacidv<vproteinv<vribosomev<vmitochondrion
C) aminovacidv<vribosomev<vproteinv<vmitochondrion
D) proteinv<vaminovacidv<vmitochondrionv<vribosome
E) proteinv<vribosomev<vmitochondrionv<vaminovacid


9. Thevthree-
dimensionalvstructurevofvmacromoleculesvisvformedvandvmaintainedvprimarilyvthroughvno
ncovalentvinteractions.v WhichvonevofvthevfollowingvisvNOTvconsideredva
noncovalentvinteraction?
A) carbon-carbonvbonds
B) hydrogenvbonds
C) hydrophobicvinteractions
D) ionicvinteractions
E) vanvdervWaalsvinteractions


10. WhichvelementvisvNOTvamongvthevfourvmostvabundantvinvlivingvorganisms?
A) carbon
B) hydrogen
C) nitrogen
D) oxygen
E) phosphorus




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, 11. Thevfourvcovalentvbondsvinvmethanev(CH4)varevarrangedvaroundvcarbonvtovgivevwhichvg
eometry?
A) linear
B) tetrahedral
C) trigonalvbipyramidal
D) trigonalvplanar
E) trigonalvpyramidal


12. Whatvfunctionalvgroupsvarevpresentvonvthisvmolecule?




A) ethervandvaldehyde
B) hydroxylvandvaldehyde
C) hydroxylvandvcarboxylicvacid
D) hydroxylvandvester
E) hydroxylvandvketone


13. Thevmacromoleculesvthatvservevinvthevstoragevandvtransmissionvofvgeneticvinformation
are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleicvacids.
E) proteins.


14. Stereoisomersvthatvarevnonsuperimposablevmirrorvimagesvofveachvothervarevknownvas:
A) anomers.
B) cis-transvisomers.
C) diastereoisomers.
D) enantiomers.
E) geometricvisomers.




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